孟宁的地盘
mengning / linuxkernel Goto Github PK
View Code? Open in Web Editor NEW操作系统导论教学资料、《庖丁解牛Linux内核》配套资料
Home Page: https://j.youzan.com/pfzVI9
License: GNU General Public License v3.0
操作系统导论教学资料、《庖丁解牛Linux内核》配套资料
Home Page: https://j.youzan.com/pfzVI9
License: GNU General Public License v3.0
请留下您的实验报告博客URL链接
1
下面是我照着写的代码:
#include <stdio.h>
#include <time.h>
int main(void)
{
time_t tt;
struct tm *t;
// tt = time(NULL);
__asm__ volatile(
"mov $0, %%ebx\n\t"
"mov $0xd, %%eax\n\t"
"int $0x80\n\t"
"mov %%eax, %0\n\t"
:"=m"(tt)
);
t = localtime(&tt);
printf("time: %d:%d:%d:%d:%d:%d:\n", t->tm_year + 1900, t->tm_mon, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
return 0;
}
我用的系统是32位的debian,其他几个内嵌汇编的代码都正常运行,唯独这个运行错误。
hero@debian:/kernel_analysis/code/chapter4$ vim time-asm.c/kernel_analysis/code/chapter4$ gcc -m32 -o time-asm time-asm.c
hero@debian:
hero@debian:~/kernel_analysis/code/chapter4$ ./time-asm
Segmentation fault
实验:从整理上理解进程创建、可执行文件的加载和进程执行进程切换,重点理解分析fork、execve和进程切换
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.